Back-pedaling brake.



Patented May I, I900.

- E. NESTER.

BACK PEDALING BRAKE.

- (Application filed. Dec/18, 1899.) (No Mode L) 2 ShaetsSheet l.

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5 k 5 A! /A$' W v 77 g ,4, I l- I I 0 t 7V 0 H1 3' i n" 0 m y a M d e tn e t a P R E T s E N E a 3 00 4 6 0 N BACK 'PEDALING BRAKE.

(Application filed Dec. 16, 1899.)

2 Sheets-Sheet 2.

(No Model.)

77521 77, ass-es (if Q 71%. www- UNIT D STATES PATE T Fries,

EDWARD NESTER, OF BUFFALO,

" JOHN J. SCHNEIDER, OF SAME PLACE.

BACK-PEDIAYLLNG BRAKE.

SPECIFICATION forming part of Letters Patent 110,648,630, dated May 1,1900. Application filed December 16,1899. derialNo. 40,506. on model.)

To all whom it may concern;

Be it known that I, EDWARD NESTER, acitizen of the United States,residing at Buffalo,

' hub by a clutch of any suitable construction,

in the county of Erie and State of New York, have invented new anduseful Improvements in Ba'ck-Pedaling Brakes, of which the following isa-specification.

This invention relates to that ,classof combined coasters andbackpedaling brakes which are applied to the hub of one of the wheels ofa velocipede, such as the rear wheel of a bicycle.

The object of myinvention is the provision of a reliable brake which canbe effectively applied when necessary and which is practicallynoiseless.

In theaccompanying drawings, consisting of two sheets, Figure 1 is asectionalelevation of a wheel-hub provided with my im proved brake. Fig.2 is a side elevation of the hub and the adjacent portion of thebicycle-frame. Figs. 3 and 4am cross-sections in lines 3 3 and 4; 4,Fig. 1, showing the reversely-operating driving Like letters ofreference refer to like parts in the several figures.

A is the rear axle of a bicycle, which is rigidly secured in the slottedlugs of the rear fork A in a well-known manner, and B is the wheel-hub,supported on the axle by ballbearings of any'suitable construction.

0 is the driving wheel or member arranged at the end of the wheel-huband consisting of a toothed rim, which is'loosely supported on a ring orflange Q, rigidly secured to the hub, preferably by a screw-thread, asshown. The driving-wheel C is connected with the wheelwhich compels thehub to tn rn forwardly with the wheel for propelling the machine, butallows the wheel to remain at rest in coasting or to turn backwardindependently ofthe ,hub for applying the brake. A roller-clutch of theconstruction shown in the drawings is preferablyemployed for thispurpose, the

same consisting of cam-faces d, formed in the periphery of the ring G,and rollers d, interposed between said cam-faces and the inner face ofthe driving-wheel. These rollers are wedged between said cam-faces andthe drivlug-wheel by the forward movement of-the and brake clutches.

. in its flange f and adapted aling.

wheel'for compelling the wheel and the hub to turn together forwardly,and the rollers re-- code into the deep rear portionsof the recess'esforming the cam-faces d when the wheel is held stationary or turnedbackwardly,thereby allowing the hub to continue its forward movementindependently of the drivingwheel. I

The driving-wheel is retained upon the clutch-ring C by-a ring or washere,-which-is applied to the end of the hub and overlaps the joint betweenthe driving-wheel and the clutch-ring and which is in turn held in placeby the dust-cap c of-the adjacentball-bearing.

F is a brake-disk rigidly. secured to the hub on the inner sideofthe.driving-wheel. In the construction shown in the drawings this ,diskis provided witha screw-threaded opening which engages with an externalthread of the wheel-hub, and the disk is clamped be- .tween a flange orshoulder .g of the hub and a nut or filling-ring g, surrounding the hubbetween the clutch-ring G and the brakedisk F. This brake-disk isprovided at its edge with an outwardly-extending annular flange f. Theperiphery of the filling-ring g is flush with that of theclutch-ring (3,and

the driving-wheel O is provided with a short" inwardly extending hub h,which said filling-ring.

I I represent curved brakes or brake-shoes side of the diskF withto bearagainst the inner face of said flange. These brake-shoes are arranged onopposite sides of the wheelhnb and are carried by elasticarms or springsJ, which meet at their front ends in a shank J. This shank is arrangedon the'inner side of the adjacent fork-arm of the velocipedeframe and issecured thereto by a clip J or other suitable fastening. sist theoutward movement of the brake-shoes and hold-the same normally out ofcontact with the flange of the brake-disk F.

, K is a shifting or actuating ring for. the brake-.shoes-which isadapted to turn backwardly with the driving-wheel G in back-ped- Thisshifting-ring is connected with by a clutch of any suitable ring to turnarranged on the enter the driving-wheel construction which compels thebackwardly with said wheel, but allows the surrounds The springs J re- 1shiftingv-ring K is provided at its ring to remain at rest when thedriving-wheel and hub turn forwardly. The clutch shown in the drawingsfor this purpose is similar to the driving-clutch heretofore described,but arranged to operate reversely to that clutch, Zis the clutch-ring ofthis brake-clutch, which is firmly secured to the hub of thedrivingwheel, and Z are the clutch-rollersinterposed between the innerface of the shifting-ring K and the ca1n-faces 1 i said clutch-ring, The

with an inwardly-extending flange it, which joverlaps theclutch-ring andkeeps the clutchrollers Z out of contact with the brake-disk F. Theshifting-ring is provided in its peor cam-faces m, which bear faces ofthe brake-shoes I and trend in the proper direction to force the shoesoutwardly against the surrounding flange of the brake-disk F when theshiftingring is turned rearwardly in'back-pedalin'g.

" shoes,

1 and the clutch-ring a casing'which incloses the above-mentioned Theshifting-ring K is preferably provided with recesses m, which receivethe brakeand the bottoms of these recesses form the cams m and arearranged at'the necessary angle to the radius of the ring to produce awedging or cam action when the ring is turned rearwardly.

This ring, .the clutch, ring 1, rollers Z and the brake-shoes I are allare ranged Within the marginal flange of the brake-disk F, and theseparts are covered andconfined by a circular plate or cap N which bearsagainst the outer edge of said flange land issecured to the ring K byscrews. 12 or other fastenings. The flanged brake-disk F'and the cap Nthus form parts. The cap N is provided in its edge with curved slots ornotches a, through which the brake-shoes extend.

The flange of the brake-disk F is preferably provided with an innerfacing o, of vulcanized fiber or other suitable non-metallic material. Y

In the normal position of the parts the brake-shoes I are retracted bytheir springs J to thefposition shown in the drawings, in

" .When it is desired to which they clear the flange of the brake-diskF. Upon driving the machine in the ordinary manner the wheel-hub B iscaused to turn forwardly with the driving-wheel O by the main or drivingCIUtUh Whi'IB-ihG brakeshoes and their shifting-ring K remain at rest.coast, the cranks are simply held stationar when the drivingclutchpermits the driving-chain or other in-- hub to continue its termediatepower-transmittingdevice and the driving-wheel to remain at rest and thewheelforward movement within Upon back-pedaling to shifting-ring K isturned with the driving-wheel O by the the driving-wheel.

backwardly brake-clutch, causing its cams m to force the brake-shoesagainst the flange of the brakedisk F and retarding or stopping themachine. Upon again pedaling forwardly the shitting- 1 inner edgethedriving-wheel is arranged and provided with an annularflange,brake-shoes arranged opposite the inner face of said brake-flange andconnected with a stationary part of the velocipede, a rotaryshifting-ring surroundin g the hub-of the driving-wheel and provided onits periphery with cams which'operate against said brake-shoes, and asecond clutch interposed between said driving-wheel and,said'shifting-ring and arranged reversely to the first-named clutch,substantially as set forth. a

2. The combination with a wheelrhub, a driving-wheeLand a driving-clutchinterposed between said members, of a brake-disk secured to said hub atthe same end at which the driving-wheel is arranged and provided with anannular flange, brake-shoes arranged opposite the inner face spring-armssecured to the velocipede-frame 'and carrying said brake-shoes, anactuating device for applyingsaid brake-shoes,and a second clutchinterposed between said actuating device and said driving-wheel andarranged reversely to the first-named clutch, substantially as setforth.

3. The combination with a wheel-hub, a driving-wheel,and adriving-clutch interposed between said members, of a brake-disk securedto the hubat the same end at which the driving-wheel is arranged andprovided with an outwardly-extending flange, brakeshoes arrangedopposite the inner face of saidbrake-fiange, spring {arms connectingsaidbrake-shoes with the frame of the velocipede,

shoes, at cap-plate secured to saidactuating device andbearing againstthe edge of said brake-flange and provided in its peripherywheel andarranged reversely to the firstnamed clutch, substantially as set forth.

'Witness my hand this 8th day of ,December, 1899. p l I EDWAR'D NESTER.Witnesses! Jive L -BONNER.

ring K is carried in the same direction by the and a second clutchinterposed bc-.

positio'n,'thereby allowing the springs J to cured tosaid hub at thesame'end at which an actuating device for applying the bra e

